One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,11)(4,13)(5,9)(6,15)(7,10)(8,12)(14,16)(17,18)(19,23)(20,25)(21,30)(22,26)(24,27)(28,32)(29,31) involution — undirected(1,3)(2,8)(4,9)(5,12)(6,16)(7,13)(10,14)(11,15)(17,19)(18,23)(20,29)(21,27)(22,28)(24,30)(25,31)(26,32) involution — undirected(1,4,6,8,7,11,5,14)(2,3,9,12,10,13,15,16)(17,19)(18,24)(20,27)(21,29)(22,28)(23,30)(25,32)(26,31)(1,5,7,6)(2,9,10,15)(3,12,13,16)(4,14,11,8)(17,20,22,21)(18,25,26,30)(19,27,28,29)(23,24,32,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.